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Finding the Fourth Proportional to 517.44, 713.68 and 328.16

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Solution

The fourth proportional to 517.44, 713.68 and 328.16 is: 452.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.44 : 713.68 = 328.16 : x
  2. Step 2: Convert to fraction form
    517.44/713.68 = 328.16/x
  3. Step 3: Cross multiply
    517.44x = 713.68 × 328.16
  4. Step 4: Simplify right side
    517.44x = 234,201.23
  5. Step 5: Solve for x
    x = 234,201.23/517.44
  6. Step 6: Final answer
    x = 452.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.